Add basic stats support for DQO.

Signed-off-by: Junfeng Guo <junfeng....@intel.com>
Signed-off-by: Rushil Gupta <rush...@google.com>
Signed-off-by: Jordan Kimbrough <jr...@google.com>
Signed-off-by: Jeroen de Borst <jeroe...@google.com>
---
 drivers/net/gve/gve_ethdev.c |  2 ++
 drivers/net/gve/gve_rx_dqo.c | 12 +++++++++++-
 drivers/net/gve/gve_tx_dqo.c |  6 ++++++
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/drivers/net/gve/gve_ethdev.c b/drivers/net/gve/gve_ethdev.c
index 1c9d272c2b..2541738da1 100644
--- a/drivers/net/gve/gve_ethdev.c
+++ b/drivers/net/gve/gve_ethdev.c
@@ -481,6 +481,8 @@ static const struct eth_dev_ops gve_eth_dev_ops_dqo = {
        .rx_queue_release     = gve_rx_queue_release_dqo,
        .tx_queue_release     = gve_tx_queue_release_dqo,
        .link_update          = gve_link_update,
+       .stats_get            = gve_dev_stats_get,
+       .stats_reset          = gve_dev_stats_reset,
        .mtu_set              = gve_dev_mtu_set,
 };
 
diff --git a/drivers/net/gve/gve_rx_dqo.c b/drivers/net/gve/gve_rx_dqo.c
index a281b237a4..2a540b1ba5 100644
--- a/drivers/net/gve/gve_rx_dqo.c
+++ b/drivers/net/gve/gve_rx_dqo.c
@@ -37,6 +37,7 @@ gve_rx_refill_dqo(struct gve_rx_queue *rxq)
                        next_avail = 0;
                        rxq->nb_rx_hold -= delta;
                } else {
+                       rxq->no_mbufs += nb_desc - next_avail;
                        dev = &rte_eth_devices[rxq->port_id];
                        dev->data->rx_mbuf_alloc_failed += nb_desc - next_avail;
                        PMD_DRV_LOG(DEBUG, "RX mbuf alloc failed port_id=%u 
queue_id=%u",
@@ -57,6 +58,7 @@ gve_rx_refill_dqo(struct gve_rx_queue *rxq)
                        next_avail += nb_refill;
                        rxq->nb_rx_hold -= nb_refill;
                } else {
+                       rxq->no_mbufs += nb_desc - next_avail;
                        dev = &rte_eth_devices[rxq->port_id];
                        dev->data->rx_mbuf_alloc_failed += nb_desc - next_avail;
                        PMD_DRV_LOG(DEBUG, "RX mbuf alloc failed port_id=%u 
queue_id=%u",
@@ -80,7 +82,9 @@ gve_rx_burst_dqo(void *rx_queue, struct rte_mbuf **rx_pkts, 
uint16_t nb_pkts)
        uint16_t pkt_len;
        uint16_t rx_id;
        uint16_t nb_rx;
+       uint64_t bytes;
 
+       bytes = 0;
        nb_rx = 0;
        rxq = rx_queue;
        rx_id = rxq->rx_tail;
@@ -94,8 +98,10 @@ gve_rx_burst_dqo(void *rx_queue, struct rte_mbuf **rx_pkts, 
uint16_t nb_pkts)
                if (rx_desc->generation != rxq->cur_gen_bit)
                        break;
 
-               if (unlikely(rx_desc->rx_error))
+               if (unlikely(rx_desc->rx_error)) {
+                       rxq->errors++;
                        continue;
+               }
 
                pkt_len = rx_desc->packet_len;
 
@@ -120,6 +126,7 @@ gve_rx_burst_dqo(void *rx_queue, struct rte_mbuf **rx_pkts, 
uint16_t nb_pkts)
                rxm->hash.rss = rte_be_to_cpu_32(rx_desc->hash);
 
                rx_pkts[nb_rx++] = rxm;
+               bytes += pkt_len;
        }
 
        if (nb_rx > 0) {
@@ -128,6 +135,9 @@ gve_rx_burst_dqo(void *rx_queue, struct rte_mbuf **rx_pkts, 
uint16_t nb_pkts)
                        rxq->next_avail = rx_id_bufq;
 
                gve_rx_refill_dqo(rxq);
+
+               rxq->packets += nb_rx;
+               rxq->bytes += bytes;
        }
 
        return nb_rx;
diff --git a/drivers/net/gve/gve_tx_dqo.c b/drivers/net/gve/gve_tx_dqo.c
index af43ff870a..450cf71a6b 100644
--- a/drivers/net/gve/gve_tx_dqo.c
+++ b/drivers/net/gve/gve_tx_dqo.c
@@ -80,10 +80,12 @@ gve_tx_burst_dqo(void *tx_queue, struct rte_mbuf **tx_pkts, 
uint16_t nb_pkts)
        uint16_t nb_used;
        uint16_t tx_id;
        uint16_t sw_id;
+       uint64_t bytes;
 
        sw_ring = txq->sw_ring;
        txr = txq->tx_ring;
 
+       bytes = 0;
        mask = txq->nb_tx_desc - 1;
        sw_mask = txq->sw_size - 1;
        tx_id = txq->tx_tail;
@@ -118,6 +120,7 @@ gve_tx_burst_dqo(void *tx_queue, struct rte_mbuf **tx_pkts, 
uint16_t nb_pkts)
                        tx_id = (tx_id + 1) & mask;
                        sw_id = (sw_id + 1) & sw_mask;
 
+                       bytes += tx_pkt->pkt_len;
                        tx_pkt = tx_pkt->next;
                } while (tx_pkt);
 
@@ -141,6 +144,9 @@ gve_tx_burst_dqo(void *tx_queue, struct rte_mbuf **tx_pkts, 
uint16_t nb_pkts)
                rte_write32(tx_id, txq->qtx_tail);
                txq->tx_tail = tx_id;
                txq->sw_tail = sw_id;
+
+               txq->packets += nb_tx;
+               txq->bytes += bytes;
        }
 
        return nb_tx;
-- 
2.34.1

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